The history of the Changchun Metro began in 2017 with the opening of its first rapid transit line, complementing the city's long-established tram network. Since then, the system has expanded quickly with several new lines serving residential districts, business areas, and major transport hubs. Designed to support the growth of Changchun, the metro has become an essential part of the city's public transportation network, providing fast and efficient travel for millions of passengers each year.